Insulating-cleat.



PATENTED APR. 1.7, 1906.

H. D. MUBDOUK.

1mm JULY 17. 1905.

INSULATING OLBAT.

APPLICATION T ...lL 1li irl m nM No. 818,185.v

- UNITED STATES PATENT oEEioE.

HENRY D. MURDOQK, yor WiLKiNsURG, PENNSYLVANIA.

l INSULATING-CLEAT.

v ef itknown that I, HENRY D. MURDOCK, a citienfiofthe United States ofAmerica, re

siding atVVilkinsbui-g, in the county of Alle-A ghenya'nd StatefofPennsylvania, have invented certain new and usel'ul Improvements -inInsulating-Cleats, of which the following is a specification, referencebeing had therein to the accompanying drawings, l

. This invention relates to certain new and,

. useful improvements in insulating-blocks;

and the'invention has for its object to provide a novelform of block inwhich various sizes of wire or cable can be clamped.

`My'invention aims to provide a positive and "reliable means foreffectually retaining a lcable or wire in engagement With aninsulating-block or piece of material, and in this con-k ne'ction I havedevised a novel form of block 'iirmly clamped and 'retained in position.

wherein ywires of various diameters can be To *this end I have devised ablock, a part of "which'is reversible, whereby either a wire of a fvclamped,together",'it has been impossible to mount wiresof variousdiameters within the 4block` without causing the blocks to be sepajrated,` this positionof the' bloclgs' preventing thef'wire from'being'firmly clamped and enti'rely surrounded by the insulating-block. I haveprovided a block which will clamp Wires of various diameters and at thesame time'insure the wire of 'being surrounded by the insulatinglblock.

With the 'above and other ohjectsin view,

which willinore readily appear las the nature ofthe invention 'isfbetterunderstood, the

'same consists in the novel construction, combination, and arrangementof parts to be hereinafter more I v.The essentialleatures of myinvention are necessarily susceptible. to ,variousl structural'changefswithout departing from thesco e of tl'iefiriventioii;'but thepreferred. em odimeri-tsl 'are 'illustrated 'in the" accompanyingdrawing 5,11; which;

. Specification of Letters Patent. .Application filed July 17,1905.Serial No. 2692.955.

fullydescribed, illustrated,

' Patented April, 17, 1906.

Figure l is a side elevation of an insulatingblock constructed inaccordance' with my invention. Y Fig. 2 is a similar view illustratingthe block clamping a wire of a larger diamete'r than that shown in theblock in Fig. 1 of the drawings; Fig. 3 isa plan View of the blockillustrated in Fig. 1. Fig. 4 isa plan f the block illustrated in Fig.2. Fig. 5 is a side elevation of a block constructed to hold one or morewires and Fig. 6 is a longitudinal sectional view of one of my improvedblocks, illustrating a modified form of construction.

Like numerals of reference designate corresponding arts throughout theseveral views of the rawings.

To put my invention into practice, my improved insulating-block consistsof two members 1 and 2, which are preferably made of orcelain or thelike insulatin material. ach member is substantially ob ong in to .planView and is provided with rounded en s 3' 3, and in each end of themembers 1 and 2 I provide vertically-disposed'openings 4 and `-5, theopenings 4 of the member 2 being adapted to aline with the openings 5 ofthe vmember 1 when the member 2 is pIaced upon the top of the member 1.In these openings conventional forms of bolts 6 6 are laced when it isdesired to clamp the insu atingblock to asupport or object, and the ends7 7 of the bolts are threaded to receive the nuts 8 8 in order that themember 2 may be clamped iiimly upon the member 1.

My invention particularly resides in the o. .iings I t 1n the members toreceive t Ve wires or cables 9 and 10. Centrally and transversely of themember 1, which serves functionally as a body ,portion or base for themember 2,' I form a groove 11 having slant'- ing sides 12 12. In thisgroove is adapted to rest the wires oi' cables to be clamped within theinsulating-blocIk.l The top and bottom ,surfaces of the lmember 2 areprovided with protuberances 14 14 and 15 15, the protuberances 14 '14forming a central'transverselydisposed groove 16,. Which lies'below thesurface 17 of the member 2. Between the pro tuberances 15 is Jformed atransverselydisposed groove 18,v which lies below the surface 19 ofthemember 2.

In Fig. 1 of the drawings I have illustrated the member2 as mounted uponthe member 1 and thesurface 19 of the member 2 coincidingwith the topofthe member 1. .When in this position, the protuberances A15 l5 ex tenddownwardly into the grooves 11 of the IOO 'adapted to rest and beclamped.

member l, and the groove 18, together with the groove 11, forms curvedbeairng-surfaces or tapers in which the cable or wire 9 is Ihen .themembersv 1 and 2 are so assembled, it will be observed that they arefirmly clamped together.

Reference will n'ow be had to Fig. 2 of the drawings, wherein I haveillustrated the member 2 as reversed-that is, the surface 17 of themember coinciding with the top of the member 1. IVhen in this osition,the protuberances 14 14 extend partiallyT into the groove' 11 of themember 1 but the groove 16, formed between the protuberances, extendsabove the top of the member 1 or the surface 17 of the member 2,consequently providing an opening Within the two memers, which willaccommodate a wire or cable of a greater diameter than the wire or cableQ.

By the construction of the members 1 and i 2 and the Jfeature ofreversing the,member 2 wires of various diameters can be clamped betweenthe two members of the insulatingblock without necessitating theuse of aspecial constructed insulatingblock to accom-A modate a special size ofwire.

In Fig. 5 of the drawings I have illustrated a block 22, which isprovided with two open ings 2323, lthese openings being constructed toaccommodate wires or cables. The members 24 and 25 of the block 22 areconstructed identical with the members 1 and 2, heretofore described,with the exception that the protuberances and grooves are duplicatedadjacent each end of vthe block providing means whereby two Wires ofvarious diameters can be clamped within the block. It

will ofcourse be understood that a block may be constructed having aplurality of grooves and protuberances to clamp a plurality of wires. f

In Fig. 6 .of the drawings I have illustrated a block wherein novelmeans is provided for temporarily holding the block in en agement withvan object or support. The" lock 26,

.having a groove 27 formed therein similar to the groove 11, heretoforedescribed, has its bottom surface 28 provided with two grooves 29 29,and in the central portion of the block I form a recess 30, whichextends downwardl from the bottom ofthe groove 27 and termlnates in atapering end 31 n close roximity to the grooves29, the'tapering end 31of the recess 30 lying approximately between grooves 29, whereby whenthe bottom of the recess is struck with a sharp instrument thel materiallying between lthe tapering end 31 of the recess 30 and the grooves 2929will be broken away, permitting'of'a screw or nail being placed in theopenings 30 to secure the block 26to a suitable-support or object. Itwill be observed that when it is notl desired to use the opening 30 forsecuring the block to a support or object thatthe block'is practicallyas sound and secure as the members 1 of the blocks heretofore described.

By the construction of my improved insulatinU-blocks considerable timcand labor is saved heretofore required in the changing of theinsulating-blocks when it was desired to clampa wire of a greaterdiameter than could be accommodated in the block, where in connectionwith my improved blocks it is only necessary that the outer or member 2of the same be reversed and secured in engagement with the member 1. Ido not care to confine myself to the( material from which mvimrovedinsulating-blocks may be made, as liard rubber, glass, or the likenon-conductive material can .be readily used.

It is thought' from the foregoing that the construction, operation, andadvantages of the herein-described insulating-block will be apparentwithout further description, and various changes in the form,proportion, and minor details of construction may be resorted to withoutdeparting from the spirit of the invention or sacrilicing any of theadvantages thereof.

What I claim, and desire to secure by Le ters Patent, is-

1. An insulating-block of the character I scribed consistingof twomembers, one of said members having a groove formed therein,protuberances carried by the u per and lower faces of the other of saidmem ers, said member having grooves formed therein between saidprotuberances, and meansto secure said members together, substantiallyas described. v

2. An insulating-block of the character described' consisting of twomembers, one of. said members having a groove formed therein,protuberances carried by the other of said members to itl in the rooveof the first-mentioned member,l sai last-named member having a grooveformed therein betweenA said protuberances, substantially as described'.

3. An insulating-block consisting of two members one of said membershaving a oove formed therein, protuberances carried y the other of saidmembers and adapted to lit within said groove, substantially asdescribed.

4. An insulating-block com rising two nol members adapted to match togeter, and one of which members has a cable receivin groove in its matchingface, the other of sai members having two matching faces, andy entdepths, protuberances on both of said faces at the outer sides of thegrooves, in combination with a second member having a groove in itsmatching faces to receive said protuberances.

7. An insulating-block comprising two members adapted to match together,one ofv which has a transversely-extending groove on its matching face,and the other of which is ada ted to have either of its faces matchwitht e first-mentioned member, and is provided with a groove and aprotuberance on each face, the grooves on one face being of a depth lessthan the grooves on the other face,

and the protuberances adapted to engage 1n the transversely-extendinggroove in the inst-mentioned member, substantially as described.

8. An insulating-block comprisin a member adapted to receive a cable,and aving a weakened portion adapted to be broken away l to form anopening therethrough'.

9. In an insu1ating-b1ock,two members adapted to be matched together,and each provided with a cable-receiving groove, one of said membersconstructed with a weakened portion ada ted to be broken away to form anopening t erethrough, as and for the purpose described. 1 Y

In testimon)T whereof I affix my signature in the presence of'twowitnesses.

HENRY D. MURDOCK. Witnesses:

E. E. POTTER, C. KLosTERMANN.

